Question: Noncombustible surfaces that are broken or incomplete shall be repaired so there will be no gaps or open spaces greater than _____ in. at the edge of a cabinet or cutout box employing a flush-type cover.
a) 1/32
b) 1/16
c) 1/8
d) 1/4
See answer below.
Answer: c) 1/8
According to Sec. 312.7, "Noncombustible surfaces that are broken or incomplete shall be repaired so there will be no gaps or open spaces greater than 1/8 in. at the edge of a cabinet or cutout box employing a flush-type cover."
About the Author
Ryan Jackson
Ryan Jackson is a National Electrical Code instructor and textbook author in the Salt Lake City, Utah area. He is also a technical consultant for the Steel Tube Institute. He is a member of Code-Making Panels 3 and 17 for the National Electrical Code and serves on several technical committees for UL Standards and Engagement. He is certified as an inspector in electrical, building, mechanical, and plumbing codes, and has taught the NEC and NFPA 70E at the national level over the last three decades.